Pibrella with GPIO cable


#1

Hi, I am a newbie with a Model B and a Pibrella. I’d now like to link my Pibrella via a 26-pin GPIO cable. Surely I need a male-to-female cable but the sites where I’ve looked for them don’t say. Also is there a cable length beyond which I’ll get less good results?


#2

No idea about length, but I’d expect you’d want an “extender” cable, e.g. http://www.adafruit.com/products/1337
particularly if you want the new end to be the correct way up.

( I have a similar cable but its only about 6 inches long, I think I got it from ebay, I can’t find it on my usual pi retailers )


#3

Hi Gisky
Thanks for your help.
AnneC


#4

Can someone tell me if this 15cm/6" cable at http://shop.pimoroni.com/products/short-raspberry-pi-gpio-cable
will do the job - i.e. join my Model B to a Pibrella.


#5

That has female connectors at both ends so I don’t think so.
I can’t be 100% sure but I would think this might do it
http://www.amazon.co.uk/gp/product/B00MEFRXRW
I have that cable and can try later for you to see if it fits and works


#6

I just tried it and it doesn’t seem to power up so either I’m doing something stupid or that isn’t the right cable!


#7

ok, the key seems to be plugging the pibrella into the correct pins in the extension ;o) I’m all new to this stuff too but It seems to work ok now (I can flash the LEDs). @gadgetoid may have some ideas about cable lengths etc. I imagine it depends what you’re doing and how critical the timing is?


#8

Now I’m curious which pins I briefly put 5v down!


#9

I suspect none of them! Although you could figure out what accidental connections you’ve made if had too much time on your hands. I’ve seen 10 Pibrella boards all plugged onto Pi’s in creative ways and no harm was done. ( It was a rush job preparing for a workshop )

It’s worth noting that a 26pin GPIO cable wont fit on a 40pin header, too, it’s just too bulky at the ends.

If you want to use a regular, none GPIO extender with two female ends, you could use a Black HAT Hack3r, but it’s probably a bit overkill for your needs!


#10

ah so would need to be a 26-pin version of the cable I’m using, more like this one http://www.adafruit.com/products/1337 ? or even http://www.ebay.co.uk/itm/GPIO-Extension-Extender-Cable-for-the-Raspberry-Pi-eg-3rd-party-Gertboard-/141354697688 ?

I realised why it didn’t work at first was because I had it one too far along so the 5v wasn’t connected so no harm done :)


Pibrella no longer for sale?
#11

Thanks everso much for all this. I think this one from Mod My Pi might do the job http://www.modmypi.com/raspberry-pi/gpio-and-breadboarding/26-pin-gpio-male-to-female-ribbon-cable-150mm-(gertboard)
but I need to collect together some more things on my wishlist before I order anything.


#12

I think probably better if one end the other way up but looks like it should work